As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
VERY OBVIOUS RUBBER SMELL IN THE COCKPIT. NOT EVIDENT IN THE CABIN. INFO ONLY WRITE UP. MAYBE ASSOCIATED WITH THE HEAT REPAIR. RAN ALL PACK'S IAW AMM 21-22-00-5. CHECKED AIR FLOW & FOR SMELLS, NO ABNORMAL SMELLS COULD BE FOUND. PACKS OPERATE NORMAL & ALL PRESSURES ARE GOOD. NO EVIDENCE OF RUBBER SMELL FROM ANY PACKS. ACFT OK FOR SERVICE.